The nonradiative changeover premiums Keep to the system WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Electricity hole. The nonradiative changeover fees of Er3+ show temperature dependence consistent with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative leisure prices is sophisticated https://erybyabcrystal85051.idblogmaker.com/33910759/5-simple-statements-about-er-yb-yab-crystal-explained